LE Wilson Expanding Die Mandrels

LE Wilson Expanding Mandrels.

Designed to be used on new rifle cartridge cases to prepare them for the seating operation. Over recent years we have seen an increase in demand for running new brass cases over an expander mandrel to properly prepare them for their first firing.

New cartridge cases are often damaged when shipped loose or in bulk. This die will remove dings or dents in the case mouth and provide a consistent neck diameter on your cases.  With the correct neck tension you can expect a more consistent seating depth and shot.